[Walt Fricke]

I run a bead of sealant on the case machined sealing surface outside of where the O ring goes. Belt and suspenders in case oil gets by the O ring somehow. Sometimes a little of that ends up in the ring groove in the bearing, but no harm to that. It does require that you lift the crank up to get at one side, so (at least with the orange stuff or other anaerobic sealants) you have to move right on to installing the left case half and tightening things down.